W. Bridgewater, MA USA
My Posts: All Forum Topic
Since I have started adding a couple of ounces of castor to a gallon of fuel, my engines seem much happier. You can feel the difference in the bearings with the castor, much smoother. Castor only makes a mess when you run too lean. I have no castor stains on my engine, just small amounts on the muffler. So far I have a couple of cases through my OS 61 SX, and if I look in the exhaust port at the piston, it is still clean and shiny. This motor has a performance specialties AAC piston liner in it. It is extremely tight when new. ps recommends that you lube it with atf, assemble it, turn it over 50 or so times, dissasemble and clean it, then reassemble with mobil 1 synthetic and run it. I didn't have any mobil 1 so I used klotz. It still turned over very hard. Just for yucks I dissasembled it, cleaned off the klotz and assembled it with castor. The difference was unbelievable! It turned over so much easier and smoother. Castor definately has better high pressure lubrication qualities than klotz. This is what sold me.